AS81 is the autonomous system of MCNC. It holds 1,946,624 IPv4 addresses in 123 prefixes plus 8 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #197 worldwide and #58 of 18,202 networks in United States. That is 0.13% of the country’s IPv4 space.
The largest block is 152.45.0.0 to 152.49.255.255 with 327,680 addresses, geolocated to Durham.
- IPv4 addresses
- 1,946,624
- IPv4 prefixes
- 123
- World rank
- #197
- Country share
- 0.13%
- IPv6 ranges
- 8
Addresses by country
- United States 100%
Largest blocks
- 152.45.0.0 Durham327,680
- 152.8.0.0 Greensboro327,680
- 152.27.75.0 Durham (Research Triangle Park)242,944
- 152.20.0.0 Wilmington131,072
- 152.60.0.0 Durham (Research Triangle Park)65,536
- 152.54.0.0 Chapel Hill65,536
- 152.18.0.0 Asheville (Five Points)65,536
- 152.6.0.0 Fayetteville65,536
Networks of similar size
- AS9304 HGC Global Communications Limited
1,958,912 - AS6799 Ote SA (Hellenic Telecommunications Organisation)
1,957,632 - AS13999 Mega Cable, S.A. de C.V.
1,957,632 - AS23724 IDC, China Telecommunications Corporation
1,951,232 - AS10013 FreeBit Co.,Ltd.
1,944,064 - AS37492 Orange Tunisie
1,942,016 - AS56045 China Mobile Communications Corporation1,929,984
- AS4725 SoftBank Corp.1,919,744
IPv4 prefixes
- 128.109.0.0/16
- 152.4.0.0/16
- 152.6.0.0/16
- 152.8.0.0/14
- 152.12.0.0/16
- 152.18.0.0/16
- 152.20.0.0/15
- 152.22.2.0/23
- 152.22.4.0/22
- 152.22.8.0/21
- 152.22.16.0/20
- 152.22.32.0/19
- 152.22.64.0/18
- 152.22.128.0/18
- 152.22.192.0/19
- 152.26.0.0/20
- 152.26.16.0/21
- 152.26.24.0/22
- 152.26.28.0/23
- 152.26.30.0/24
- 152.26.32.0/20
- 152.26.48.0/22
- 152.26.52.0/23
- 152.26.54.0/24
- 152.26.57.0/24
- 152.26.58.0/23
- 152.26.60.0/22
- 152.26.64.0/20
- 152.26.80.0/21
- 152.26.92.0/22
- 152.26.96.0/19
- 152.26.128.0/18
- 152.26.192.0/20
- 152.26.208.0/22
- 152.26.212.0/23
- 152.27.0.0/18
- 152.27.64.0/21
- 152.27.72.0/23
- 152.27.75.0/24
- 152.27.76.0/22
- 152.27.80.0/20
- 152.27.96.0/19
- 152.27.128.0/17
- 152.28.0.0/15
- 152.30.0.0/16
- 152.32.0.0/18
- 152.38.0.0/18
- 152.38.64.0/19
- 152.38.160.0/19
- 152.38.192.0/18
- 152.40.64.0/18
- 152.40.128.0/17
- 152.42.64.0/18
- 152.45.0.0/16
- 152.46.0.0/15
- 152.48.0.0/15
- 152.54.0.0/16
- 152.60.0.0/16
- 185.83.159.0/24
- 192.101.21.0/24
- 192.101.22.0/23
- 192.101.24.0/24
- 192.137.210.0/24
- 192.154.33.0/24
- 192.154.43.0/24
- 192.154.48.0/24
- 192.154.55.0/24
- 192.154.58.0/24
- 192.154.60.0/23
- 192.154.66.0/24
- 192.154.76.0/23
- 192.154.95.0/24
- 192.189.244.0/24
- 198.85.0.0/18
- 198.85.64.0/19
- 198.85.96.0/20
- 198.85.112.0/22
- 198.85.116.0/24
- 198.85.118.0/23
- 198.85.120.0/21
- 198.85.128.0/18
- 198.85.192.0/20
- 198.85.208.0/22
- 198.85.213.0/24
- 198.85.214.0/23
- 198.85.216.0/22
- 198.85.221.0/24
- 198.85.222.0/24
- 198.85.224.0/22
- 198.85.229.0/24
- 198.85.232.0/21
- 198.85.240.0/20
- 198.86.0.0/20
- 198.86.16.0/21
- 198.86.24.0/22
- 198.86.28.0/24
- 198.86.30.0/23
- 198.86.32.0/19
- 198.86.64.0/18
- 198.86.128.0/17
- 204.84.0.0/22
- 204.84.12.0/22
- 204.84.16.0/20
- 204.84.32.0/19
- 204.84.64.0/23
- 204.84.67.0/24
- 204.84.68.0/22
- 204.84.72.0/21
- 204.84.80.0/20
- 204.84.96.0/19
- 204.84.128.0/18
- 204.84.192.0/19
- 204.84.224.0/21
- 204.84.232.0/22
- 204.84.236.0/23
- 204.84.240.0/22
- 204.84.248.0/22
- 204.85.0.0/17
- 204.85.128.0/19
- 204.85.160.0/20
- 204.85.192.0/18
- 206.107.110.0/24
- 206.211.64.0/19
Questions and answers
Who owns AS81?
Autonomous system AS81 is operated by MCNC.
How many IP addresses does AS81 have?
The network holds 1,946,624 IPv4 addresses in 123 prefixes, plus 8 IPv6 ranges.
Which country is AS81 in?
The main country is United States.
How big is AS81?
By IPv4 addresses it ranks #197 worldwide.
What is the largest address block of AS81?
152.45.0.0 to 152.49.255.255, 327,680 addresses.